The Filter,fluid, cataloged under National Stock Number 4330-01-273-3375, is classified within Federal Supply Class 4330 (Centrifugals, Separators, and Pressure and Vacuum Filters) of the Pumps and Compressors group. The manufacturer of record is Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div. Government technical data includes 29 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-273-3375 |
| Primary Part Number | HH9021K12DPSWST |
| Item Name | Filter,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div |
| Status | ACTIVE |
| Filtering Media Design | PLEATED SINGLE FILTERING MEDIA RESPONSE |
| Mounting Hole Quantity | 4 |
| Filtration Rating in Microns | 3.0 ABSOLUTE |
| Distance Between Mounting Hole Centers | 1.250 INCHES NOMINAL AND 3.500 INCHES NOMINAL IN |
| Drop Pressure | ERR-060 |
| Design Type | REUSABLE |
| Body Outside Diameter | 2.900 INCHES NOMINAL IN |
| First Intake Flange Width | 4.000 INCHES NOMINAL IN |
| First Intake Flange Length | 1.810 INCHES NOMINAL IN |
| Temp Rating | -45.0 FAHRENHEIT MINIMUM AND 225.0 FAHRENHEIT MAXIMUM DEGF |
| Body Height | 12.640 INCHES NOMINAL IN |
| First Intake Connection Type | PLAIN FACE FLANGE TOP |
| Style Designator | HIGH PRESSURE THREADED BODY |
| Mounting Hole Diameter | 0.350 INCHES NOMINAL IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Features Provided | DIFFERENTIAL PRESSURE INDICATOR |
| First Intake Flange Shape Style | RECTANGULAR W/UNTHREADED BOLT HOLES |
| Filtering Element Quantity | 1 |
| Body Length | 7.310 INCHES NOMINAL IN |
| Filtering System for Which Designed | FULL FLOW |
| First Discharge Connection Relationship to Intake Connection | IDENTICAL TO FIRST INTAKE CONNECTION |
| Surface Treatment | ANODIZE BODY |
| Surface Treatment | ANODIZE SEDIMENT BOWL |
| Media for Which Designed | FUEL/OIL, HYDROCARBON |
| Material | ALUMINUM SEDIMENT BOWL |
| Material | RUBBER BUNA N SEAL |
| Material | ALUMINUM BODY |
| Material | FIBER SYNTHETIC AND RESIN SYNTHETIC FILTERING MEDIUM |
| Mounting Type | UNTHREADED HOLE TOP |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| HH9021K12DPSWST PRIMARY | Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div (USA) |
| Reference | Meaning |
|---|---|
| HH9021K12UPSWS | 5/9 Secondary reference Pall Corp Div Pall Corporation |
NSN 4330-01-273-3375 is a Filter,fluid, manufactured by Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-273-3375 has 1 manufacturer part number on file: HH9021K12DPSWST (Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div).
Key specifications for HH9021K12DPSWST: Filtering Media Design: PLEATED SINGLE FILTERING MEDIA RESPONSE; Mounting Hole Quantity: 4; Filtration Rating in Microns: 3.0 ABSOLUTE; Distance Between Mounting Hole Centers: 1.250 INCHES NOMINAL AND 3.500 INCHES NOMINAL IN. 29 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.